Synthesis of Fatty 1,2,4-Trioxanes by Peracetalization of β-Hydroxy Hydroperoxides
作者:Nicolas Duguet、Thomas De Dios Miguel、Dan Louvel、Killian Onida、Adeline Lavoignat、Stephane Picot
DOI:10.1055/a-1643-3057
日期:2022.2
ether (CPME) gave the best NMR yield (85%) for the preparation of the fatty trioxane. The optimized conditions were applied to a range of aromatic and aliphatic aldehydes, and the corresponding 1,2,4-trioxanes were isolated with 30–91% yields (21 examples). The antimalarial activity of three trioxanes was studied against Plasmodium falciparum, however, no significant activity was detected (IC50 >1600
使用苯甲醛作为模型底物研究了衍生自油酸甲酯的 β-羟基氢过氧化物的过缩醛化,以得到相应的脂肪 1,2,4-三恶烷。获得作为区域异构体混合物的所需产物,但每种仅形成一种非对映异构体。研究了酸催化剂的性质,发现对甲苯磺酸 (PTSA) 和 Amberlyst A35 (A35) 分别是有效的均相和非均相催化剂。还研究了溶剂的性质,醚溶剂如 2-甲基四氢呋喃 (2-MeTHF)、甲基叔丁基醚 (MTBE) 和环戊基甲基醚 (CPME) 为制备脂肪三恶烷。优化的条件应用于一系列芳香族和脂肪族醛,以及相应的 1,2, 4-三恶烷以 30-91% 的产率分离(21 个实例)。研究了三种三恶烷对恶性疟原虫的抗疟活性,但未检测到显着活性(IC50 > 1600 nM)。